﻿//
// Copyright 2023 Google LLC
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//

using Google.Solutions.Common.Runtime;
using Moq;
using NUnit.Framework;
using System;

namespace Google.Solutions.Common.Test.Runtime
{
    [TestFixture]
    public class TestDisposableContainer
    {
        [Test]
        public void WhenEmpty_ThenDisposeSucceeds()
        {
            using (new DisposableContainer())
            { }
        }

        //---------------------------------------------------------------------
        // Add.
        //---------------------------------------------------------------------

        [Test]
        public void Add_WhenNull()
        {
            using (var container = new DisposableContainer())
            {
                container.Add(null!);
            }
        }

        //---------------------------------------------------------------------
        // Dispose.
        //---------------------------------------------------------------------

        [Test]
        public void Dispose_WhenNotEmpty_ThenDisposeDisposesAllObjects()
        {
            var disposable1 = new Mock<IDisposable>();
            var disposable2 = new Mock<IDisposable>();

            using (var container = new DisposableContainer(disposable1.Object))
            {
                container.Add(disposable2.Object);
            }

            disposable1.Verify(d => d.Dispose(), Times.Once);
            disposable2.Verify(d => d.Dispose(), Times.Once);
        }
    }
}
